Commutator for electrical machines.



F. R. KUNKEL.

GOMMUTATOR POR BLBGTRIGAL MACHINES.

APPLIOATION FILED 00T.7, 190B.

Patented July 20, 1909.

WITNESSES:

lBY

ATTORNEY A"Ururjnn srnfrns PATENT operon.

FRED R. KUNKEL, OF EDGEWOOD PARK, PENNSYLVANIA, ASSIGNOR, BY MESNEASSIGN- MENTS, TO WESTINGHOUSE ELECTRIC da MANUFACTURING COMPANY` OI"EAST PITTS- BURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA:

i comunicaron son ELEcTmcAnMAoHiNEs.

Specification of Letters Patent.

Patented July 20, 1909.

Divided and this application filed October 7, 1908.

Serial N0. 456,637.

new and useful Im rovementl in Commutators for Electrical achines, ofwhich the folf lowing is aspeciiication, this being a division anddurability in service.

drawing is a lon of application Serial No. 410,221, filed January1o,19os.

My invention relates to commutators for electrical machines, and it hasfor its object to provide a commutator cylinder for small arts, thecombination and arrangement of w 'ch shall be such as to insure economyof manufacture, lightness and compactness of structure,

The single figure of the accompanying I mature core of a motor embodying-my in- Y I have deemed it necessary to illustrate only vention. y

Since my invention relates solely to the commutator cylinders ofelectrical machines,

a commutator cvlinder and those portions of the machine which aredirectly connected thereto and associated therewith in' mechanicalrelations. i

Mounted upon a shaft -1 are an armature core 2 and a metal sleeve 3, thelatter being shown as having its. ends upset to form flanges4 4 forclamping the other portions of the commutator cylinder `together andthus make a single structure,f1-'which may be mounted u on and removedfrom the shaft l as a unit, t ough I do-not desireor intend to 4limit myinvention to this specific clam ing ends of the bar 6 are enla ed toform bases 7 of dovetail form; and in t 'e spaces between the heads andbases are tted'msulating collars 8, the inner faces of which are soformed as to fit against the faces of theparts 5 and 6.

'tudinal section through the commutator cylinder and a portion of thear- -insulated from Outside the insulatingI rings 8 are metal disks 9and 10, between which are clamped theA parts 6 and 8. AThe inner end ofthe structure just described is protected by means of an insulating cap11.

' In case the sleeve 8 is provided with two integral end flanges 4 forholding the commutator parts together in proper coperative relation, theflange at one endwill preferably be formed by upsetting the metal, orotherwise, before the ,parts 6, 7, 8, 9 and 10 are assembled, and, afterthese parts are assembled, the flange 4 at .the other end of the sleevewill be formed by u setting the metalf against. the end plate 9 or t eend plate 10, as the case may be, the parts being thus securely clam edbetween the flanges 4. It is ap arent, t erefore, that the commutator cyinder parts are' securely held together upon the sleeve 3 in such mannerthat they may readily .be placed in position upon the shaft and removedtherefrom as a unit.

It will be understood from the foregoing description that the commutatorcylinder may be readily and inexpensively manufactured, and that, whenits partel are securely held in proper relative positions.

Minor structural variations from what I have shown and described may bemade, if

desired, Without departing vfrom my inven-v tion. l

I claim as my invention: i LVA commutator cylinder for dyn electricmachines comprising conducting segments having dove-tail ro]ections,insulating collars embracing t e dove-tail projections, reinforcingdisks for the insulating collars, anda supportin sleevel for the saidparts having integral anges at lits ends for clampingthem together.

2. lA commutator cylinder forA dynamoelectric machines comprisingconducting seginsulatp ments having dove-tail rojections, ing collarsembracing tllie dove-tail rojections, reinforcing disks for theinsulating collars, a supporting sleeve for the said parts having meansfor clamping them together, and a sleeve surrounding the aforesaidsleeve to insulate the segments therefrom.

electric machinesl comprising conducting. segare assembled, they 4 amo-. 10o l 3.. A commutator cylinder'V for dynamoments having dove-teilprojections, nsnlatf for seid parts having integral flanges at its 10ing clamping rings embracing the said proends for clamping them toether.

jections, and :L supporting sleeve for the said In testimony whereof,have hereunto parts having integral flanges at its ends for subscribedmy name this 2nd day of October,

clun'iping them together, 1908.

4. A comnnltator cylinder comprising seg- FRED R. KUNKEL.

ments having laterally projecting inner ends, Witnesses:

opposing insulating clamping members to en M. J. BRNSON,

. gage said inner enrls, and a supporting sleeve i BIRNEY HINES.

